Home / 231,771,232.80-319,872,108.78-139,002,775.20

Finding the Fourth Proportional to 231,771,232.80, 319,872,108.78 and 139,002,775.20

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Solution

The fourth proportional to 231,771,232.80, 319,872,108.78 and 139,002,775.20 is: 191,840,507.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,771,232.80 : 319,872,108.78 = 139,002,775.20 : x
  2. Step 2: Convert to fraction form
    231,771,232.80/319,872,108.78 = 139,002,775.20/x
  3. Step 3: Cross multiply
    231,771,232.80x = 319,872,108.78 × 139,002,775.20
  4. Step 4: Simplify right side
    231,771,232.80x = 44,463,110,829,496,280
  5. Step 5: Solve for x
    x = 44,463,110,829,496,280/231,771,232.80
  6. Step 6: Final answer
    x = 191,840,507.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.